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G6Tanuki · 18th Nov 2019, 1:13 pm

Probably because back when it was made there were still loads of 2-pin power outlets (5 or 15 amp) in service, so there may have been nowhere to connect the earth!

18th Nov 2019, 1:13 pm	#4
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 13,998	Re: Pye wireless intercom PTC1001 Probably because back when it was made there were still loads of 2-pin power outlets (5 or 15 amp) in service, so there may have been nowhere to connect the earth!